Hier scheint es noch zu gehen:
rose@lynx:/home/rose(3)$ grep amd64 /etc/make.conf
ACCEPT_KEYWORDS="amd64 ~amd64"
ose@lynx:/home/rose(4)$ quse -D opencl
local:opencl:app-crypt/johntheripper: Enable opencl support for
speeding up cracking on capable devices
local:opencl:app-emulation/crossover-bin: Enable OpenCL support
local:opencl:app-emulation/wine-any: Enable OpenCL support
local:opencl:app-emulation/wine-d3d9: Enable OpenCL support
local:opencl:app-emulation/wine-staging: Enable OpenCL support
local:opencl:app-emulation/wine-vanilla: Enable OpenCL support
local:opencl:app-text/tesseract: Enable opencl support for speedup
using GPU computation.
local:opencl:dev-libs/actor-framework: Compiles against the provided
opencl implementation
local:opencl:dev-libs/libgpuarray: Enable OpenCL support
...
local:opencl:sci-libs/gdal: Enable OpenCL support
local:opencl:sci-libs/shogun: Enable support for building against
OpenCL
rose@lynx:/home/rose(5)$